Safety Works Toxic Dust Replacement Filter Cartridge

P100 filters offer the highest level of dust protection available in a NIOSH (National Institute for Occupational Safety and Health) approved cartridge. Cartridges feature an air flow opening positioned at the back of the cartridges so that the dust and debris is less likely to clog the filters. The opening also facilitates blocking the cartridges with thumb for an easy fit check when on the respirator.